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https://issues.apache.org/jira/browse/MAPREDUCE-5228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13663854#comment-13663854
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Vinod Kumar Vavilapalli commented on MAPREDUCE-5228:
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Zhijie pointed to me offline that as framework completely uses the new Counter,
users won't be able to 'findCounter' using the old-name.
To be able to handle this, we need a trivial translator (ala Configuration
deprecated-keys), which when requested to find old deprecated counters will
translate, find and return the new counters.
> Enum Counter is removed from FileInputFormat and FileOutputFormat of both
> mapred and mapreduce
> ----------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5228
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5228
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Reporter: Zhijie Shen
> Assignee: Mayank Bansal
>
> The enum was used by findCounter(Enum key) to find a specific counter object.
> Now it seems to be replaced by FileInputFormatCounter and
> FileOutputFormatCounter. Now the enum seems to be only used internally, but
> not sure whether it will be used externally when users extend FileXXXXFormat.
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